4423433421 has 16 divisors (see below), whose sum is σ = 6487265088. Its totient is φ = 2680866320.

The previous prime is 4423433407. The next prime is 4423433437. The reversal of 4423433421 is 1243343244.

It is a happy number.

It is not a de Polignac number, because 4423433421 - 2⁵ = 4423433389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423433621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549906 + ... + 557891.

It is an arithmetic number, because the mean of its divisors is an integer number (405454068).

Almost surely, 2^4423433421 is an apocalyptic number.

It is an amenable number.

4423433421 is a deficient number, since it is larger than the sum of its proper divisors (2063831667).

4423433421 is a wasteful number, since it uses less digits than its factorization.

4423433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107833 (or 1107811 counting only the distinct ones).

The product of its digits is 27648, while the sum is 30.

The square root of 4423433421 is about 66508.8973070521. The cubic root of 4423433421 is about 1641.5464073633.

Adding to 4423433421 its reverse (1243343244), we get a palindrome (5666776665).

The spelling of 4423433421 in words is "four billion, four hundred twenty-three million, four hundred thirty-three thousand, four hundred twenty-one".